Charles seybold



(Nd Model.)

0. SEYBOLD. HAND ULAMP FOR PAPER GUTTERS.

No. 597,070. Patented Jan. 11,1898.

2H Hllllllllli lh i UNITED STATES PATENT OFFICE.

CHARLES SEYBOLD, OF DAYTON, OHIO, ASSIGNOR TO THE SEYBOLD MACHINE COMPANY, OF SAME PLACE.

HAND-CLAM P FOR PAPER-CUTTERS.

SPECIFICATION forming part of Letters Patent No. 597,070, dated January 1 1, 1898. Application flied February 18, 1897- Berial No. 623,280. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES SEYBOLD, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Hand-Glamps for Auto matic aper-Cutting Machines, of which the following isa full, clear, and exact description, reference being bad to the accompanyin'g drawings, forming part of this specification.

Myimprovements relate to a certain novel construction of hand-clamp to be used in connection with an automatic paper-cutter, whereby the hand-clamp may be thrown into operation at a moments notice and which by a very simple adjustment may also be'employed as a stop-gage to limit the upstroke of,the clamp for certain purposes when the machine is working automatically.

In automatic paper-cutting machines it has longbeen customary to snpplya hand-clamp or means for operating the clamp by handpower when it is desired to disconnect the clamp from the cutting-knife, so that the clamp will not be operated automatically with the knife. This has heretofore been accomplished bya hand-wheel placed at the top of the machine and arrang'ed to be coupled to the clamp when the friction-clutch between the knifeoperating and clamp-operating device is released, and in order' to properly opcrate the clamp by hand racks and pinions or other equivalent devices have been em ployed, connected by a suitableconnectingrod,in order that the press are might be equally distributed at each end of the'clamp; but with such hand-clamp attachments the hand-wheel cannot be located in a convenient position,

the connecting mechanism between each end of the clamp must necessarily be made somewhat small, and agood deal of power is lost in the friction on racks and pinions. In ade dition to this there has'been no convenient way to stop the upstroke of the clamp, when used automatically, at any desired position.

It is to overcome these objections that my invention is directed; and it consists of a cer tain novel construction and arrangement of parts to be hereinafter more particularly pointed out and claimed.

the other side of the machine, where a similar connection is had with the other end of the clamp.

F- is, one end of a cam-plate by means of which,-with suitable gearing, the knife-bar is operated, the cam-plate being connected at each end by connecting-rods G with the knifebar H.

Connection is had between the clamp-driv ing shaft E and the knife-driving cam-plate F by means of a hub a, mounted on and keyed to the shaft E, which hub carries by arm I) a band 0, open at one side to receive the block d. This block carries a lever e, so that by moving the lever the block will turn on its pivot and open out the expansion-band c.

--f is a screw which passes through the shaft Eand has a bearing against the end of the lever e, by means'of which the band a maybe expanded as desired. Mounted looselyaronnd i this expansion-band cis a ring-band g, provided with the hub a, mounted loosely on shaft E. This hub a is provided with a socket 5', within which socket the rod h slides out and in. The rod his pivoted 0r coupled on the bar d, secured across an opening in the cam-plate F, so that as the cam-plateF is reciprocated to operate the knife the ringband 9 will be-oscillated. It will be evident, therefore, that when the band 0 is expanded to clutch the. ring-band the shaft E will be oscillated to draw down'or raise the clamp.

It will be understood that the construction above described is old and forms no part of the present invention; but the above brief description has been given as showing the main features of construction, which, as above described, are fully shown in my prior patent, No. 511,972, of January 2, 1894.

l l are two journal-boxes secured to the side standards A of the frame at a convenient height, within which is mounted the screw L, operated by hand-wheel M at a convenient position in front of the machine. Mounted on this screw L is a screw-threaded follower N, so that the turning of the screw by the hand-wheel will cause the follower to travel back and forth between the journal-boxes, the screw being held in position by the collars m m. Pivoted to the lug non the followerN is a bar P, which can be raised and lowered by the handle p. This bar P is provided with a notch r and a long recess or notch 8. Extending forward from the crank-arm D is the arm R, carrying at its upper end the pin it to receive the bar I either in the notch 'ror the long recess s.

It will be evident from this construction that when it is desired to use the machine with the hand-clamp the friction-clutch between the clamp-driving shaft and the knifedriving cam-plate may be released by adjusting screwf and that the bar P may be connected with the arm R on the crank D by socuring the notch r of the bar on the pin t at the end of this arm. When this is done, it will be evident that the clamp may be operated by hand by turning the hand-wheel M, which will drive the follower N to oscillate the clamp-shaft E and thus raise and lower the clamp. Now when the pin i is placed in the other notch or recess 3 and the expansionband clutch is adjusted to operate the clamp automatically the movement of the arm R will be limited to stop when it reaches the outer end of the groove 8, so that by adjust ing the follower N at any desired position the clamp in its upward movement may be stopped at any point desired, and thereafter the friction-elutch will slip during the subsequent operation of the knifebar. It will thus be seen that the notch 'r forms a fixed coupling-point for the arm R to the bar P, while the long notch 5 allows the arm to move freely within the limits of the notch s and thus forms a sliding coupling connection between the arm R and the bar P. This adjustment whereby the elements of the handclamp can be used as a stop-gage for the upstroke of the clamp is a matter of considerable importance when cutting labels and the like where the ordinary cutting-gage is not employed but the margins of the labels are used as the guide by which to out. Then by stopping the clamp in its upstroke as soon as it clears the top of the package the edge of the clamp forms a perfect gage by which to cut.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a paper-cutting machine, the combination, with cutting knife and actuating mechanism therefor, and a clamp and means for operating same, with friction-clutch intermediate said means and mechanism, of a screw and hand-ope rated mechanism therefor with connecting device between said screw and clamp-driving means, whereby, when the frictioirclutch is released, the clamp may be driven by hand but when not released the movement of the clamp will be limited thereby, substantially as shown and described.

2. In a papencutting machine, the combination, with cutting knife and actuating mechanism therefor, and a clamp and means for operating same, with friction-clutch intermediate said means and mechanism, of a screw and handoperated mechanism therefor, with connecting device between said screw and clamp-driving means, provided with a fixed and a sliding stop, whereby when adjusted with fixed stop the clamp may be operated by hand and when adjusted with sliding stop the clamp movement will be limited thereby, substantially as shown and described.

3. In a hand clamp device for paper-cutters, the combination, with the clamp, connecting-rods and clamp-driving shaft operating same, of a screw, with screw-threaded follower mounted thereon, and connecting-bar attached thereto for connecting said follower to the clamp-driving shaft, substantially as shown and described.

4. In a hand clamp device for paper-cutters, the combination, with the clamp and power-driven shaft for operating same automatically, of a screw with a screw-threaded follower mounted thereon and connecting-bar attached thereto, provided with means for connecting said follower to the clamp-shaft, and with a stop for limiting the rotation of the clamp-shaft, substantially as shown and described.

5. In a hand clamp device for paper-cutters, the combination, with the clamp and power-driven shaft, with cranks and pullingbars for operating same automatically, of a screw and hand-operated mechanism therefor, with a screw-threaded follower mounted thereon, and a connecting-bar attached thereto, provided with a notch and a groove, and arm on the clamp-shaft to which said connecting-bar is secured either in the notch or the groove, whereby the clamp may be driven by hand or the upstroke of the clamp may be limited in its play, substantially as shown and described.

CHARLES SEY BOLD.

Witnesses:

WEBSTER W. SHUEY, NELLIE MCGRATH.

IIO 

